1978 GMC Trucks Pickups Sales Brochure. Go Truckin in a GMC. Nothin goes truckin like a GMC Pickup. The GMC Pickup Trucks shown in this catalog are equipped with GM-built engines produced by various divisions. Please refer to the engine data sheet included in this catalog or available from your dealer for complete details about engine sources and availability. Features GMC Wideside Models, Fenderside Models, Big GMC Bonus/Crew Cabs, and Cab & Chassis Models. Covers the availability of 4-wheel drive, interiors, power options, and available equipment. Technical info on the back. It is in good condition. Form No ADV 78-1